Lock assembly



FIG. 1 is a front perspective view of a lock assembly showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is an enlarged front elevational view of the key portion shown separately for ease of illustration;

FIG. 4 is an enlarged front elevational view of the lever portion shown separately for ease of illustration;

FIG. 5 is an enlarged left side elevational view of FIG. 1, the right side being a mirror image; and,

FIG. 6 is a top plan view of FIG. 5.

The broken line showing in FIGS. 1, 2, 5 and 6 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a lock assembly, as shown and described. 